/*
 * Copyright (c) Huawei Technologies Co., Ltd. 2021.
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use
 * this file except in compliance with the License.  You may obtain a copy of the
 * License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed
 * under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
 * CONDITIONS OF ANY KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations under the License.
 *
 */

// Package util provides the function IsOnlyRead to check sql is only read, and provides a LRUCache.
package util

import (
	"strings"
)

// IsOnlyRead  parse sql is only read
func IsOnlyRead(sql string) bool {
	if sql == "" {
		return true
	}
	sqlType := strings.ToUpper(strings.Split(sql, " ")[0])
	return sqlType == "SELECT"
}
